Have you ever thought about getting into hydroponic indoor gardening as a hobby or money making scheme? Below is a list of advantages to hydroponic indoor gardening when compared to traditional soil based gardening: 1. Once you have made your initial set-up costs, hydroponic gardening is around 20% less expensive to run. 2. You can plant more hydroponic plants in a smaller area. This is because the roots do not need to grow as large as they have...